US dollars http://dorothy-gish.com/phd-thesis-dissertation/ can you do my homework please  --Race disparities in health and education have narrowed generally since the 1960s. While residential segregation remains high, a typical black person now lives in a nonmajority black neighborhood for the first time. Previous studies have shown that wealth is a greater predictor of standardized test scores than race; the test-score gap between rich and low-income students is now nearly double the gap between blacks and whites.